What need to Consider before monitor Network Devices.

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1. HOSTNAME NAMING: If your network devices name is mostly CODE host name example JRAS_01_DS and this hostname is in "Datacenter Switch" you better set the host in Nagios as "Datacenter Switch JFRAS_01_DS", why? because first you already know where this device is located, and also if you have 10 Switch in Datacenter the sorting for location already been sort so it going to ease of knowing the location & can help someone who does't know where this switch is located easy to understand which branch is down.

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2. PORT DESCRIPTION: When you want to add a host in nagios, If you using NagiosXI, please use "Port Description" because it going to help you to understand the link's where it connected to. And also please monitor all the interfaces even you don't want to monitor it, this is because to avoid re-discover & which interface you don't want to monitor just deactive it in CCM.

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3. DISCOVER: Please be noted NagiosXI wizard only discover a "LINK", so if you wanted to monitor CPU, CPU Fan you need to do snmpwalk and add manually the services.

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4. NOTIFICATION: Some network administrator does not want to receive all the INTERFACE notification, but for sure he wanted an alert for Network Devices, so in contact, you better 1 contact only alert for HOST, 1 contact only alert for Services, and 1 contact alert for BOTH services & host. By doing this if going to be easy for you to manage an alert based on Network Administrator request.

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